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Polymorphic-UIButton

A rectangular UIButton that transform itself into a circle (animated), with a built-in Activity indicator. Written entirely in Swift.

A short youtube Demo of the component

Table Of contents

Try It

Download/Clone the project. Open it with Xcode. Go in the Main.Storyboard File Select a Button. Now you can play/custom it with the attributes Inspector. Image Then Just Launch It (On simulator Or Device).

Installation

  1. Drop the LMPolymorphicButton.swift into your project
  2. There is no step Two.

Features

  • Highly and easily customizable
  • Built with and for Autolayout
  • Made with love

Requirements

  • Needs AutoLayout.

How to use

I will present here a simple usage case From Storyboard/Inteface builder. there is a lot of way to use this component. 1 Create a UIView 2 Inside that UIView Put a UIButton with these constraints:

  • Same Width (priority 750)
  • Same Height (priority 750)
  • Center Vertically
  • Center Horizontally 3 Change the Class of that UIButton to LMPolymorphicButton In the identity Inspector

That's It.

Now from the code you can just call the startActivity Method:

myAwesomeButton.startActivity()

myAwesomeButton.stopActivity()

How it works

LMPolymorphicButton Uses Autolayout's.

There are two animations, the CornerRadius Animation (To transform it into a Circle) and the AspectRatio Constraint’s Animation (to set the width equal to the height, circle/square). LMPolymorphic add programttically a constraints to Itself: AspectRatio 1:1. When I Need to collapse It I change the priority Of this constraint to 800(this value must be greater than the « Same Width » and « Same Height » priority. And when I need to expand it I change the priority from 800 to 200. I Just Animate this priority Change.

The CornerRadius Animation is a simple CABasicAnimation.

So LMPOlymorphicButton Requires AutoLayout To works.

Fully Customizable From Storyboard.

Misc

Pull requests are welcome Just Open an Issue Or Make A pull Request to add It here.

Needs Help?

Just open an Issue.